Question 37708
R=S-5 NOW SUBSTITUTING S-5 FOR R WE GET (S-5)~2+S=7 OR S~2-10S+25+S=7 OR

S~2-9S+18=0 OR (S-6)(S-3)=0 OR S=6 & S=3 THEN R=6-5 OR R=1 & R=3-5 OR R=-2